This workshop service manual provides comprehensive information for the Komatsu WA250-5H and WA250PT-5H wheel loaders. These machines are engineered for demanding operational environments, offering robust performance and reliability. The manual covers specific serial number ranges, ensuring precise guidance for maintaining these models. This document serves as an essential resource for owners, mechanics, and technicians. It details maintenance procedures, troubleshooting guides, technical specifications, and safety protocols. With extensive coverage including hydraulic systems, electrical circuits, powertrain components, and work equipment, this manual facilitates effective upkeep and repair, ensuring the longevity and optimal performance of your Komatsu wheel loader.